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Polythermal Mixing of Cold Seawater and Hot Hydrothermal Fluids

Control fluid composition and temperature in experiments involving cold seawater and hot hydrothermal water to study mineral precipitation and dissolution.

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Polythermal Mixing of Cold Seawater and Hot Hydrothermal Fluids

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  1. Fluid 1: Cold, oxygenated seawater Specify fluid composition and T on the Basispane Add new species Run → Go to equilibrate the fluid T = 4 °C

  2. Run → Pickup → Reactants → Fluid moves the equilibrated fluid to the Reactantspane and vacates the Basis pane Seawater: 1 kg solvent water plus solutes React ~1 kg seawater 10x into the new Basis pane fluid

  3. Fluid 2: Hot, reduced hydrothermal water “+” expands T settings Set Tof initial (273 °C) and reactant (4 °C) fluids to implement polythermal mixing Run → Go to mix the fluids

  4. As 10+ kg cold seawater mixes with hydrothermal fluid, temperature of mixture decreases Entirely hot hydrothermal fluid

  5. As seawater is mixed into hydrothermal fluid, mineral precipitation and dissolution is influenced by temperature and dilution effects.

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